MMA8451Q Просмотр технического описания (PDF) - Freescale Semiconductor

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производитель

MMA8451Q

3-Axis, 14-bit/8-bit Digital Accelerometer

Freescale Semiconductor 

2.2 Electrical Characteristics

Table 3. Electrical Characteristics @ VDD = 2.5V, VDDIO = 1.8V, T = 25°C unless otherwise noted.

Parameter

Supply Voltage

Test Conditions

Symbol

Min

Typ

VDD(1)

1.95

2.5

Interface Supply Voltage

VDDIO(1)

1.62

1.8

ODR = 1.56 Hz

6

ODR = 6.25 Hz

6

ODR = 12.5 Hz

6

Low Power Mode

ODR = 50 Hz

14

IddLP

ODR = 100 Hz

24

ODR = 200 Hz

44

ODR = 400 Hz

85

ODR = 800 Hz

165

ODR = 1.56 Hz

24

ODR = 6.25 Hz

24

ODR = 12.5 Hz

24

Normal Mode

ODR = 50 Hz

24

ODR = 100 Hz

Idd

44

ODR = 200 Hz

85

ODR = 400 Hz

165

ODR = 800 Hz

165

Current during Boot Sequence, 0.5 mSec max

duration using recommended Bypass Cap

VDD = 2.5V

Idd Boot

Value of Capacitor on BYP Pin

-40°C 85°C

Cap

75

100

VDD = 2.5V, VDDIO = 1.8V

STANDBY Mode Current @25°C

STANDBY Mode

IddStby

1.8

Digital High Level Input Voltage

SCL, SDA, SA0

VIH

0.75*VDDIO

Digital Low Level Input Voltage

SCL, SDA, SA0

VIL

High Level Output Voltage

INT1, INT2

Low Level Output Voltage

INT1, INT2

Low Level Output Voltage

SDA

IO = 500 μA

IO = 500 μA

IO = 500 μA

VOH

0.9*VDDIO

VOL

VOLS

Power on Ramp Time

0.001

Time from VDDIO on and VDD > Vmin until I2C

ready for operation

Cbyp = 100 nF

BT

—

350

Max

Unit

3.6

V

3.6

V

μA

μA

1

mA

470

nF

5

μA

V

V

0.3*VDDIO

V

V

0.1*VDDIO

V

0.1*VDDIO

1000

ms

500

µs

Turn-on time (STANDBY to ACTIVE)

Ton

2/ODR + 1 ms

s

Turn-on time (Power Down to ACTIVE Mode)

Ton

2/ODR + 2 ms

s

Operating Temperature Range

Top

-40

+85

°C

1. There is no requirement for power supply sequencing. The VDDIO input voltage can be higher than the VDD input voltage.

Sensors

Freescale Semiconductor, Inc.

MMA8451Q

7

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